408 Transactions.— Zoology. 
stitiis rarissime uniseriatim punctulatis ; corpore infra pedibusque 
ferrugineis, squamis albis adspersis. Long. 11-12lin. 
ab.: Waikato. 
In most specimens there is a dark round blotch on the middle of each 
elytron, and vestiges of two or three smaller spots on the prothorax. 
SYRPHETODES. 
Caput depressum ; clypeus apice truncatus; labrum produetum ; palpi 
maxillares elongati, labiales brevissimi ; mentum transversum ; oculi 
rotundati. Antenne tenues, artieulis tribus ultimis clavam forman- 
tibus. — Prothorar transversus, basi angustatus, apice profunde 
emarginatus, Elytra convexa, subcordata ; epipleure late, integra. 
Pedes tenuati; tibie cylindrice, apice breviter bispinosm. Cove 
postice subapproximate. 
The head is slightly concave between the antenney ; the latter are ai 
free at the base, owing to the small size of the antennary orbits; for the 
same reason the eyes preserve their rounded outline. The clypeus is rather 
narrowed anteriorly, and shows no trace of any line of separatior from the 
front. The tarsi are filiform, and the claw-joint is nearly as long as the 
rest together, especially of the anterior pair. Opatrum tuberculicostatum, 
White, the type of a new genus, differs from Syrphetodes in the antenne not 
being clavate, the eye partly divided by the antennary orbit, and by the 
non-approximation of the posterior coxe; both genera agree with the 
“ Phylacides" of Lacordaire in having the epipleure of the elytra entire 
behind. The exact habitat is unknown; my specimens I owe to the kind- 
ness of Major Parry. 
Syrphetodes marginatus. 
S. ovalis, fuscescens, squamis silaceis sat dense lectus ; antennis 
articulo tertio quam secundo duplo longiore; clava tomentosa ; 
prothorace inæquato, apice bifido, angulis anticis acute productis, 
lateribus explanatis; seutello valde transverso, fusco; elytris pro- 
thorace latioribus, punetis parvis in seriebus ieiunus impres- 
sis, dorso tuberculis plurimis instruetis, marginibus explanatis, 
transversim sulcato-punctatis ; pedibus albido variatim maculatis. 
Long. 5 lin. 
Hab, : ——? 
 STENOPOTES. 
Capui elongatum, antice protensum, quadratum. Oculi reniformes, 
obliqui, grosse granulati. Antenne corpore longiores, articulo 
basali elongato. Prothorav capite angustior, latitudine sesqui- 
longior, lateribus inermis. Elytra elongata, subparallela, leviter 
